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RFC 1700 - ethernet-numbers

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    ETHER TYPES

    Many of the networks of all classes are Ethernets (10Mb) or
    Experimental Ethernets (3Mb).  These systems use a message "type"
    field in much the same way the ARPANET uses the "link" field.

    If you need an Ether Type, contact:

    Xerox Corporation
    1350 Jefferson Rd.
    Rochester, NY 14623
    USA

    Contact: Neil Sembower
    Phone: 716-427-5033
    EMail: sembower@eso.mc.xerox.com

    The following list of EtherTypes is contributed unverified information
    from various sources.  Another list of EtherTypes is maitained by
    Michael A. Patton and is accessible at:

    Assignments:

    Ethernet          Exp. Ethernet    Description          References
    -------------     -------------   -----------           ----------
    decimal  Hex      decimal  octal
      0000   0000-05DC   -       -    IEEE802.3 Length Field   [XEROX]
      0257   0101-01FF   -       -    Experimental             [XEROX]
      0512   0200        512   1000   XEROX PUP (see 0A00)   [8,XEROX]
      0513   0201        -      -     PUP Addr Trans (see 0A01)[XEROX]
             0400                     Nixdorf                  [XEROX]
      1536   0600       1536   3000   XEROX NS IDP         [133,XEROX]
             0660                     DLOG                     [XEROX]
             0661                     DLOG                     [XEROX]
      2048   0800        513   1001   Internet IP (IPv4)     [105,JBP]
      2049   0801        -      -     X.75 Internet            [XEROX]
      2050   0802        -      -     NBS Internet             [XEROX]
      2051   0803        -      -     ECMA Internet            [XEROX]
      2052   0804        -      -     Chaosnet                 [XEROX]
      2053   0805        -      -     X.25 Level 3             [XEROX]
      2054   0806        -      -     ARP                     [88,JBP]
      2055   0807        -      -     XNS Compatability        [XEROX]
      2056   0808        -      -     Frame Relay ARP        [RFC1701]
      2076   081C        -      -     Symbolics Private         [DCP1]
      2184   0888-088A   -      -     Xyplex                   [XEROX]
      2304   0900        -      -     Ungermann-Bass net debugr[XEROX]
      2560   0A00        -      -     Xerox IEEE802.3 PUP      [XEROX]
      2561   0A01        -      -     PUP Addr Trans           [XEROX]
      2989   0BAD        -      -     Banyan VINES             [XEROX]
      2990   0BAE        -      -     VINES Loopback         [RFC1701]
      2991   0BAF        -      -     VINES Echo             [RFC1701]
      4096   1000        -      -     Berkeley Trailer nego    [XEROX]
      4097   1001-100F   -      -     Berkeley Trailer encap/IP[XEROX]
      5632   1600        -      -     Valid Systems            [XEROX]
     16962   4242        -      -     PCS Basic Block Protocol [XEROX]
     21000   5208        -      -     BBN Simnet               [XEROX]
     24576	 6000        -      -     DEC Unassigned (Exp.)    [XEROX]
     24577   6001        -      -     DEC MOP Dump/Load        [XEROX]
     24578   6002        -      -     DEC MOP Remote Console   [XEROX]
     24579   6003        -      -     DEC DECNET Phase IV Route[XEROX]
     24580   6004        -      -     DEC LAT                  [XEROX]
     24581   6005        -      -     DEC Diagnostic Protocol  [XEROX]
     24582   6006        -      -     DEC Customer Protocol    [XEROX]
     24583   6007        -      -     DEC LAVC, SCA            [XEROX]
     24584   6008-6009   -      -     DEC Unassigned           [XEROX]
     24586   6010-6014   -      -     3Com Corporation         [XEROX]
     25944   6558        -      -     Trans Ether Bridging   [RFC1701]
     25945   6559        -      -     Raw Frame Relay        [RFC1701]
     28672   7000        -      -     Ungermann-Bass download  [XEROX]
     28674   7002        -      -     Ungermann-Bass dia/loop  [XEROX]
     28704   7020-7029   -      -     LRT                      [XEROX]
     28720   7030        -      -     Proteon                  [XEROX]
     28724   7034        -      -     Cabletron                [XEROX]
     32771   8003        -      -     Cronus VLN            [131,DT15]
     32772   8004        -      -     Cronus Direct         [131,DT15]
     32773   8005        -      -     HP Probe                 [XEROX]
     32774   8006        -      -     Nestar                   [XEROX]
     32776   8008        -      -     AT&T                     [XEROX]
     32784   8010        -      -     Excelan                  [XEROX]
     32787   8013	     -      -     SGI diagnostics            [AXC]
     32788   8014        -      -     SGI network games          [AXC]
     32789   8015        -      -     SGI reserved               [AXC]
     32790   8016	     -      -     SGI bounce server          [AXC]
     32793   8019        -      -     Apollo Domain            [XEROX]
     32815   802E        -      -     Tymshare                 [XEROX]
     32816   802F        -      -     Tigan, Inc.              [XEROX]
     32821   8035        -      -     Reverse ARP             [48,JXM]
     32822   8036        -      -     Aeonic Systems           [XEROX]
     32824   8038        -      -     DEC LANBridge            [XEROX]
     32825   8039-803C   -      -     DEC Unassigned           [XEROX]
     32829   803D        -      -     DEC Ethernet Encryption  [XEROX]
     32830   803E        -      -     DEC Unassigned           [XEROX]
     32831   803F        -      -     DEC LAN Traffic Monitor  [XEROX]
     32832   8040-8042   -      -     DEC Unassigned           [XEROX]
     32836   8044        -      -     Planning Research Corp.  [XEROX]
     32838   8046        -      -     AT&T                     [XEROX]
     32839   8047        -      -     AT&T                     [XEROX]
     32841   8049        -      -     ExperData                [XEROX]
     32859   805B        -      -     Stanford V Kernel exp.   [XEROX]
     32860   805C        -      -     Stanford V Kernel prod.  [XEROX]
     32861   805D        -      -     Evans & Sutherland       [XEROX]
     32864   8060        -      -     Little Machines          [XEROX]
     32866   8062        -      -     Counterpoint Computers   [XEROX]
     32869   8065        -      -     Univ. of Mass. @ Amherst [XEROX]
     32870   8066        -      -     Univ. of Mass. @ Amherst [XEROX]
     32871   8067        -      -     Veeco Integrated Auto.   [XEROX]
     32872   8068        -      -     General Dynamics         [XEROX]
     32873   8069        -      -     AT&T                     [XEROX]
     32874   806A        -      -     Autophon                 [XEROX]
     32876   806C        -      -     ComDesign                [XEROX]
     32877   806D        -      -     Computgraphic Corp.      [XEROX]
     32878   806E-8077   -      -     Landmark Graphics Corp.  [XEROX]
     32890   807A        -      -     Matra                    [XEROX]
     32891   807B        -      -     Dansk Data Elektronik    [XEROX]
     32892   807C        -      -     Merit Internodal           [HWB]
     32893   807D-807F   -      -     Vitalink Communications  [XEROX]
     32896   8080        -      -     Vitalink TransLAN III    [XEROX]
     32897   8081-8083   -      -     Counterpoint Computers   [XEROX]
     32923   809B        -      -     Appletalk                [XEROX]
     32924   809C-809E   -      -     Datability               [XEROX]
     32927   809F        -      -     Spider Systems Ltd.      [XEROX]
     32931   80A3        -      -     Nixdorf Computers        [XEROX]
     32932   80A4-80B3   -      -     Siemens Gammasonics Inc. [XEROX]
     32960   80C0-80C3   -      -     DCA Data Exchange Cluster[XEROX]
     32964   80C4        -      -     Banyan Systems           [XEROX]
     32965   80C5        -      -     Banyan Systems           [XEROX]
     32966   80C6        -      -     Pacer Software           [XEROX]
     32967   80C7        -      -     Applitek Corporation     [XEROX]
     32968   80C8-80CC   -      -     Intergraph Corporation   [XEROX]
     32973   80CD-80CE   -      -     Harris Corporation       [XEROX]
     32975   80CF-80D2   -      -     Taylor Instrument        [XEROX]
     32979   80D3-80D4   -      -     Rosemount Corporation    [XEROX]
     32981   80D5        -      -     IBM SNA Service on Ether [XEROX]
     32989   80DD        -      -     Varian Associates        [XEROX]
     32990   80DE-80DF   -      -     Integrated Solutions TRFS[XEROX]
     32992   80E0-80E3   -      -     Allen-Bradley            [XEROX]
     32996   80E4-80F0   -      -     Datability               [XEROX]
     33010   80F2        -      -     Retix                    [XEROX]
     33011   80F3        -      -     AppleTalk AARP (Kinetics)[XEROX]
     33012   80F4-80F5   -      -     Kinetics                 [XEROX]
     33015   80F7        -      -     Apollo Computer          [XEROX]
     33023   80FF-8103   -      -     Wellfleet Communications [XEROX]
     33031   8107-8109   -      -     Symbolics Private        [XEROX]
     33072   8130        -      -     Hayes Microcomputers     [XEROX]
     33073   8131        -      -     VG Laboratory Systems    [XEROX]
     33074   8132-8136                Bridge Communications    [XEROX]
     33079   8137-8138   -      -     Novell, Inc.             [XEROX]
     33081   8139-813D   -      -     KTI                      [XEROX]
             8148                     Logicraft                [XEROX]
             8149                     Network Computing Devices[XEROX]
             814A                     Alpha Micro              [XEROX]
     33100   814C        -      -     SNMP                      [JKR1]
             814D                     BIIN                     [XEROX]
             814E                     BIIN                     [XEROX]
             814F                     Technically Elite Concept[XEROX]
             8150                     Rational Corp            [XEROX]
             8151-8153                Qualcomm                 [XEROX]
             815C-815E                Computer Protocol Pty Ltd[XEROX]
             8164-8166                Charles River Data System[XEROX]
             817D-818C                Protocol Engines         [XEROX]
             818D                     Motorola Computer        [XEROX]
             819A-81A3                Qualcomm                 [XEROX]
             81A4                     ARAI Bunkichi            [XEROX]
             81A5-81AE                RAD Network Devices      [XEROX]
             81B7-81B9                Xyplex                   [XEROX]
             81CC-81D5                Apricot Computers        [XEROX]
             81D6-81DD                Artisoft                 [XEROX]
             81E6-81EF                Polygon                  [XEROX]
             81F0-81F2                Comsat Labs              [XEROX]
             81F3-81F5                SAIC                     [XEROX]
             81F6-81F8                VG Analytical            [XEROX]
             8203-8205                Quantum Software         [XEROX]
             8221-8222                Ascom Banking Systems    [XEROX]
             823E-8240                Advanced Encryption Syste[XEROX]
             827F-8282                Athena Programming       [XEROX]
             8263-826A                Charles River Data System[XEROX]
             829A-829B                Inst Ind Info Tech       [XEROX]
             829C-82AB                Taurus Controls          [XEROX]
             82AC-8693                Walker Richer & Quinn    [XEROX]
             8694-869D                Idea Courier             [XEROX]
             869E-86A1                Computer Network Tech    [XEROX]
             86A3-86AC                Gateway Communications   [XEROX]
             86DB                     SECTRA                   [XEROX]
             86DE                     Delta Controls           [XEROX]
     34543   86DF        -      -     ATOMIC                     [JBP]
             86E0-86EF                Landis & Gyr Powers      [XEROX]
             8700-8710                Motorola                 [XEROX]
     34667   876B        -      -     TCP/IP Compression     [RFC1144]
     34668   876C        -      -     IP Autonomous Systems  [RFC1701]
     34669   876D        -      -     Secure Data            [RFC1701]
             8A96-8A97                Invisible Software       [XEROX]
     36864   9000        -      -     Loopback                 [XEROX]
     36865   9001        -      -     3Com(Bridge) XNS Sys Mgmt[XEROX]
     36866   9002        -      -     3Com(Bridge) TCP-IP Sys  [XEROX]
     36867   9003        -      -     3Com(Bridge) loop detect [XEROX]
     65280	 FF00        -      -     BBN VITAL-LanBridge cache[XEROX]
             FF00-FF0F                ISC Bunker Ramo          [XEROX]
     65535   FFFF        -      -     Reserved               [RFC1701]

    The standard for transmission of IP datagrams over Ethernets and
    Experimental Ethernets is specified in [RFC894] and [RFC895]
    respectively.

    NOTE:  Ethernet 48-bit address blocks are assigned by the IEEE.

    IEEE Registration Authority
    c/o Iris Ringel
    IEEE Standards Department
    445 Hoes Lane, P.O. Box 1331
    Piscataway, NJ 08855-1331
    Phone +1 908 562 3813
    Fax: +1 908 562 1571

    ETHERNET VENDOR ADDRESS COMPONENTS

    Ethernet hardware addresses are 48 bits, expressed as 12 hexadecimal
    digits (0-9, plus A-F, capitalized).  These 12 hex digits consist of
    the first/left 6 digits (which should match the vendor of the Ethernet
    interface within the station) and the last/right 6 digits which
    specify the interface serial number for that interface vendor.

    Ethernet addresses might be written unhyphenated (e.g., 123456789ABC),
    or with one hyphen (e.g., 123456-789ABC), but should be written
    hyphenated by octets (e.g., 12-34-56-78-9A-BC).

    These addresses are physical station addresses, not multicast nor
    broadcast, so the second hex digit (reading from the left) will be
    even, not odd.

    At present, it is not clear how the IEEE assigns Ethernet block
    addresses.  Whether in blocks of 2**24 or 2**25, and whether
    multicasts are assigned with that block or separately.  A portion of
    the vendor block address is reportedly assigned serially, with the
    other portion intentionally assigned randomly.  If there is a global
    algorithm for which addresses are designated to be physical (in a
    chipset) versus logical (assigned in software), or globally-assigned
    versus locally-assigned addresses, some of the known addresses do not
    follow the scheme (e.g., AA0003; 02xxxx).

    Another list of Ethernet vendor address components is maitained by
    Michael A. Patton and is accessible at:

    00000C  Cisco
    00000E  Fujitsu
    00000F  NeXT
    000010  Sytek
    00001D  Cabletron
    000020  DIAB (Data Intdustrier AB)
    000022  Visual Technology
    00002A  TRW
    000032  GPT Limited (reassigned from GEC Computers Ltd)
    00005A  S & Koch
    00005E  IANA
    000065  Network General
    00006B  MIPS
    000077  Interphase Corporation
    00007A  Ardent
    000080  Cray Communications A/S
    000089  Cayman Systems  Gatorbox
    000093  Proteon
    00009F  Ameristar Technology
    0000A2  Wellfleet
    0000A3  Network Application Technology
    0000A6  Network General (internal assignment, not for products)
    0000A7  NCD             X-terminals
    0000A9  Network Systems
    0000AA  Xerox           Xerox machines
    0000B3  CIMLinc
    0000B7  Dove            Fastnet
    0000BC  Allen-Bradley
    0000C0  Western Digital
    0000C5  Farallon phone net card
    0000C6  HP Intelligent Networks Operation (formerly Eon Systems)
    0000C8  Altos
    0000C9  Emulex          Terminal Servers
    0000D7  Dartmouth College (NED Router)
    0000D8  3Com? Novell?   PS/2
    0000DD  Gould
    0000DE  Unigraph
    0000E2  Acer Counterpoint
    0000EF  Alantec
    0000FD  High Level Hardvare (Orion, UK)
    000102  BBN             BBN internal usage (not registered)
    001700  Kabel
    0020AF  3COM ???
    0020C9  Victron
    008064  Wyse Technology / Link Technologies
    00802B  IMAC ???
    00802D  Xylogics, Inc.  Annex terminal servers
    00808C  Frontier Software Development
    0080C2  IEEE 802.1 Committee
    0080D3  Shiva
    00A03E  ATM Forum
    00AA00  Intel
    00DD00  Ungermann-Bass
    00DD01  Ungermann-Bass
    020701  Racal InterLan
    020406  BBN             BBN internal usage (not registered)
    026086  Satelcom MegaPac (UK)
    02608C  3Com            IBM PC; Imagen; Valid; Cisco
    02CF1F  CMC             Masscomp; Silicon Graphics; Prime EXL
    080002  3Com (Formerly Bridge)
    080003  ACC (Advanced Computer Communications)
    080005  Symbolics       Symbolics LISP machines
    080008  BBN
    080009  Hewlett-Packard
    08000A  Nestar Systems
    08000B  Unisys
    080011  Tektronix, Inc.
    080014  Excelan         BBN Butterfly, Masscomp, Silicon Graphics
    080017  NSC
    08001A  Data General
    08001B  Data General
    08001E  Apollo
    080020  Sun             Sun machines
    080022  NBI
    080025  CDC
    080026  Norsk Data (Nord)
    080027  PCS Computer Systems GmbH
    080028  TI              Explorer
    08002B  DEC
    08002E  Metaphor
    08002F  Prime Computer  Prime 50-Series LHC300
    080036  Intergraph      CAE stations
    080037  Fujitsu-Xerox
    080038  Bull
    080039  Spider Systems
    080041  DCA Digital Comm. Assoc.
    080045  ???? (maybe Xylogics, but they claim not to know this number)
    080046  Sony
    080047  Sequent
    080049  Univation
    08004C  Encore
    08004E  BICC
    080056  Stanford University
    080058  ???             DECsystem-20
    08005A  IBM
    080067  Comdesign
    080068  Ridge
    080069  Silicon Graphics
    08006E  Concurrent      Masscomp
    080075  DDE (Danish Data Elektronik A/S)
    08007C  Vitalink        TransLAN III
    080080  XIOS
    080086  Imagen/QMS
    080087  Xyplex          terminal servers
    080089  Kinetics        AppleTalk-Ethernet interface
    08008B  Pyramid
    08008D  XyVision        XyVision machines
    080090  Retix Inc       Bridges
    484453  HDS ???
    800010  AT&T
    AA0000  DEC             obsolete
    AA0001  DEC             obsolete
    AA0002  DEC             obsolete
    AA0003  DEC             Global physical address for some DEC machines
    AA0004  DEC             Local logical address for systems running
                            DECNET

    ETHERNET MULTICAST ADDRESSES

    An Ethernet multicast address consists of the multicast bit, the
    23-bit vendor component, and the 24-bit group identifier assigned by
    the vendor.  For example, DEC is assigned the vendor component
    08-00-2B, so multicast addresses assigned by DEC have the first
    24-bits 09-00-2B (since the multicast bit is the low-order bit of the
    first byte, which is "the first bit on the wire").

    Another list of Ethernet multicast addresses is maitained by Michael
    A. Patton and is accessible at:

    Ethernet                Type
    Address                 Field   Usage

    Multicast Addresses:

    01-00-5E-00-00-00-      0800    Internet Multicast        [RFC1112]
    01-00-5E-7F-FF-FF
    01-00-5E-80-00-00-      ????    Internet reserved by IANA
    01-00-5E-FF-FF-FF
    01-80-C2-00-00-00       -802-   Spanning tree (for bridges)
    09-00-02-04-00-01?      8080?   Vitalink printer
    09-00-02-04-00-02?      8080?   Vitalink management
    09-00-09-00-00-01       8005    HP Probe
    09-00-09-00-00-01       -802-   HP Probe
    09-00-09-00-00-04       8005?   HP DTC
    09-00-1E-00-00-00       8019?   Apollo DOMAIN
    09-00-2B-00-00-00       6009?   DEC MUMPS?
    09-00-2B-00-00-01       8039?   DEC DSM/DTP?
    09-00-2B-00-00-02       803B?   DEC VAXELN?
    09-00-2B-00-00-03       8038    DEC Lanbridge Traffic Monitor (LTM)
    09-00-2B-00-00-04       ????    DEC MAP End System Hello
    09-00-2B-00-00-05       ????    DEC MAP Intermediate System Hello
    09-00-2B-00-00-06       803D?   DEC CSMA/CD Encryption?
    09-00-2B-00-00-07       8040?   DEC NetBios Emulator?
    09-00-2B-00-00-0F       6004    DEC Local Area Transport (LAT)
    09-00-2B-00-00-1x       ????    DEC Experimental
    09-00-2B-01-00-00       8038    DEC LanBridge Copy packets
                                    (All bridges)
    09-00-2B-01-00-01       8038    DEC LanBridge Hello packets
                                    (All local bridges)
                                    1 packet per second, sent by the
                                    designated LanBridge
    09-00-2B-02-00-00       ????    DEC DNA Lev. 2 Routing Layer routers?
    09-00-2B-02-01-00       803C?   DEC DNA Naming Service Advertisement?
    09-00-2B-02-01-01       803C?   DEC DNA Naming Service Solicitation?
    09-00-2B-02-01-02       803E?   DEC DNA Time Service?
    09-00-2B-03-xx-xx       ????    DEC default filtering by bridges?
    09-00-2B-04-00-00       8041?   DEC Local Area Sys. Transport (LAST)?
    09-00-2B-23-00-00       803A?   DEC Argonaut Console?
    09-00-4E-00-00-02?      8137?   Novell IPX
    09-00-56-00-00-00-      ????    Stanford reserved
    09-00-56-FE-FF-FF
    09-00-56-FF-00-00-      805C    Stanford V Kernel, version 6.0
    09-00-56-FF-FF-FF
    09-00-77-00-00-01       ????    Retix spanning tree bridges
    09-00-7C-02-00-05       8080?   Vitalink diagnostics
    09-00-7C-05-00-01       8080?   Vitalink gateway?
    0D-1E-15-BA-DD-06       ????    HP
    AB-00-00-01-00-00       6001    DEC Maintenance Operation Protocol
                                    (MOP) Dump/Load Assistance
    AB-00-00-02-00-00       6002    DEC Maintenance Operation Protocol
                                    (MOP) Remote Console
                                    1 System ID packet every 8-10 minutes,
                                    by every:
                                    DEC LanBridge
                                    DEC DEUNA interface
                                    DEC DELUA interface
                                    DEC DEQNA interface
                                    (in a certain mode)
    AB-00-00-03-00-00       6003    DECNET Phase IV end node Hello
                                    packets 1 packet every 15 seconds,
                                    sent by each DECNET host
    AB-00-00-04-00-00       6003    DECNET Phase IV Router Hello packets
                                    1 packet every 15 seconds, sent by
                                    the DECNET router
    AB-00-00-05-00-00       ????    Reserved DEC through
    AB-00-03-FF-FF-FF
    AB-00-03-00-00-00       6004    DEC Local Area Transport (LAT) - old
    AB-00-04-00-xx-xx       ????    Reserved DEC customer private use
    AB-00-04-01-xx-yy       6007    DEC Local Area VAX Cluster groups
                                    Sys. Communication Architecture (SCA)
    CF-00-00-00-00-00       9000    Ethernet Configuration Test protocol
                                    (Loopback)

    Broadcast Address:

    FF-FF-FF-FF-FF-FF       0600    XNS packets, Hello or gateway search?
                                    6 packets every 15 seconds, per XNS
                                    station
    FF-FF-FF-FF-FF-FF       0800    IP (e.g. RWHOD via UDP) as needed
    FF-FF-FF-FF-FF-FF       0804    CHAOS
    FF-FF-FF-FF-FF-FF       0806    ARP (for IP and CHAOS) as needed
    FF-FF-FF-FF-FF-FF       0BAD    Banyan
    FF-FF-FF-FF-FF-FF       1600    VALID packets, Hello or gateway
                                    search?
                                    1 packets every 30 seconds, per VALID
                                    station
    FF-FF-FF-FF-FF-FF       8035    Reverse ARP
    FF-FF-FF-FF-FF-FF       807C    Merit Internodal (INP)
    FF-FF-FF-FF-FF-FF       809B    EtherTalk

    IANA ETHERNET ADDRESS BLOCK

    The IANA owns an Ethernet address block which may be used for
    multicast address asignments or other special purposes.

    The address block in IEEE binary is:  0000 0000 0000 0000 0111 1010

    In the normal Internet dotted decimal notation this is 0.0.94 since
    the bytes are transmitted higher order first and bits within bytes are
    transmitted lower order first (see "Data Notation" in the
    Introduction).

    IEEE CSMA/CD and Token Bus bit transmission order: 00 00 5E

    IEEE Token Ring bit transmission order: 00 00 7A

    Appearance on the wire (bits transmitted from left to right):

        0                           23                            47
        |                           |                             |
        1000 0000 0000 0000 0111 1010 xxxx xxx0 xxxx xxxx xxxx xxxx
        |                                     |
        Multicast Bit                         0 = Internet Multicast
                                              1 = Assigned by IANA for
                                                  other uses

    Appearance in memory (bits transmitted right-to-left within octets,
    octets transmitted left-to-right):

        0                           23                            47
        |                           |                             |
        0000 0001 0000 0000 0101 1110 0xxx xxxx xxxx xxxx xxxx xxxx
                |                     |
                Multicast Bit         0 = Internet Multicast
                                      1 = Assigned by IANA for other uses

    The latter representation corresponds to the Internet standard
    bit-order, and is the format that most programmers have to deal with.
    Using this representation, the range of Internet Multicast addresses
    is:

           01-00-5E-00-00-00  to  01-00-5E-7F-FF-FF  in hex, or

           1.0.94.0.0.0  to  1.0.94.127.255.255  in dotted decimal

    SNAP PROTOCOL IDS IN THE IANA ETHERNET ADDRESS BLOCK

    The Sub-Network Access Protocol (SNAP) header contains 40 bits: 24
    bits containing an IEEE-assigned Organizationally Unique Identifier
    (OUI), and 16 bits containing a Protocol Identifier (PID).  The OUIs
    are the same as those used in the Ethernet Vendor Address Components
    list below.  The IANA's OUI, 00-00-5E, may be used in SNAP headers
    with the appropriate PID to identify the protocols listed below.

    Note that the IANA restricts this list to protocols that are ONLY
    identified in this manner; if a protocol has an EtherType, then SNAP
    headers identifying that protocol must contain an OUI of 00-00-00,
    with the EtherType in the PID field.

    The SNAP PID assignments using the IANA's OUI are:

    Protocol ID      Description                     References
    -----------      -----------                     ----------
    decimal  Hex
      0001   0001    MARS Data Messages (short form) [work in progress]
      0002   0002    reserved for future NHRP use    [work in progress]
      0003   0003    MARS/NHRP Control Messages      [work in progress]
      0004   0004    MARS Data Messages (long form)  [work in progress]

    REFERENCES

    [RFC894]  Hornig, C., "A Standard for the Transmission of IP Datagrams
              over Ethernet Networks, STD 41, RFC 894, Symbolics,
              April 1984.

    [RFC895]  Postel, J., "A Standard for the Transmission of IP Datagrams
              over Experimental Ethernet Networks, STD 42, RFC 895,
              USC/Information Sciences Institute, April 1984.

    [RFC1112]  Deeering, S., "Host Extensions for IP Multicasting",
               STD 5, RFC 1112, Stanford University, August 1989.

    [RFC1701]  Hanks, S., Li, T, Farinacci, D., and P. Traina,
               "Generic Routing Encapsulation", RFC 1701, NetSmiths, Ltd.,
               and cisco Systems, October 1994.

    PEOPLE

    [AXC] Andrew Cherenson

    [DCP1] David Plummer

    [DT15] Daniel Tappan

    [HWB] Hans-Werner Braun

    [JBP] Jon Postel

    [JKR1] Joyce K. Reynolds

    [JXM] Joseph Murdock <---none--->

    [XEROX] Neil Sembower

    []

Connected: An Internet Encyclopedia
RFC 1700 - ethernet-numbers